1297224289 has 3 divisors (see below), whose sum is σ = 1297260307. Its totient is φ = 1297188272.

The previous prime is 1297224281. The next prime is 1297224307. The reversal of 1297224289 is 9824227921.

The square root of 1297224289 is 36017.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9824227921 = 10103 ⋅972407.

It can be written as a sum of positive squares in only one way, i.e., 672624225 + 624600064 = 25935^2 + 24992^2 .

It is not a de Polignac number, because 1297224289 - 2³ = 1297224281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1297224281) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 18009 + ... + 54025.

Almost surely, 2^1297224289 is an apocalyptic number.

1297224289 is the 36017-th square number.

1297224289 is the 18009-th centered octagonal number.

It is an amenable number.

1297224289 is a deficient number, since it is larger than the sum of its proper divisors (36018).

1297224289 is an frugal number, since it uses more digits than its factorization.

1297224289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72034 (or 36017 counting only the distinct ones).

The product of its digits is 290304, while the sum is 46.

The cubic root of 1297224289 is about 1090.6155625809.

The spelling of 1297224289 in words is "one billion, two hundred ninety-seven million, two hundred twenty-four thousand, two hundred eighty-nine".